Lora P2P can not receive data continuously

Nam · June 22, 2023, 2:05am

In example Lora_P2P.ino

If I block the lines of code like below I can’t get the data continuously. I only get the first 1 frame after resetting.

As far as I understand:
The locked code is only relevant to sending packets. Why does it affect the reception of incoming packets?

How can I receive packets continuously.

void loop()
{
uint8_t payload[] = “payload”;
bool send_result = false;

//if (rx_done) {
//    rx_done = false;
//    while (!send_result) {
//        send_result = api.lorawan.psend(sizeof(payload), payload);
//        Serial.printf("P2P send %s\r\n", send_result ? "Success" : "Fail");
//        if (!send_result) {
//            Serial.printf("P2P finish Rx mode %s\r\n", api.lorawan.precv(0) ? "Success" : "Fail");
//            delay(1000);
//        }
//   }
//}

delay(500);

}

This is the full code:

github.com

NamNamIoT/RAK3172_CANOPUS/blob/main/examples/LoRa_P2P/LoRa_P2P.ino

/*************************************
 * This example is from https://github.com/Kongduino/RUI3_LoRa_P2P_PING_PONG
 * This example needs two devices, a device will send LoRa P2P package after receiving LoRa P2P package.
 *************************************/

long startTime;
bool rx_done = false;
double myFreq = 868000000;
uint16_t sf = 12, bw = 0, cr = 0, preamble = 8, txPower = 22;

void hexDump(uint8_t * buf, uint16_t len)
{
    char alphabet[17] = "0123456789abcdef";
    Serial.print(F("   +------------------------------------------------+ +----------------+\r\n"));
    Serial.print(F("   |.0 .1 .2 .3 .4 .5 .6 .7 .8 .9 .a .b .c .d .e .f | |      ASCII     |\r\n"));
    for (uint16_t i = 0; i < len; i += 16) {
        if (i % 128 == 0)
            Serial.print(F("   +------------------------------------------------+ +----------------+\r\n"));
        char s[] = "|                                                | |                |\r\n";
        uint8_t ix = 1, iy = 52;

This file has been truncated. show original

Thank you.

beegee · June 22, 2023, 4:27am

The example code you are pointing to is setting RX mode for 3000ms in the setup():
api.lorawan.precv(3000)

If you need continuous RX mode, you need to change the time in precv
Check the API documentation for precv to select the correct value you need:

Nam · June 22, 2023, 4:30am

I really don’t have the patience to read the docs before using it.
I’m sorry about that and will learn to do some research before asking questions.

Thank you!

system · June 24, 2023, 4:30am

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